Results 41 to 50 of about 4,986 (224)

Unbounded quantum backflow in two dimensions

open access: yes, 2022
Quantum backflow refers to the counterintuitive fact that the probability can flow in the direction opposite to the momentum of a quantum particle. This phenomenon has been seen to be small and fragile for one-dimensional systems, in which the maximal ...
Srivastava, Shashi C.L.   +7 more
core   +1 more source

Generation and focusing of a second-order vector beam using a subwavelength optical element

open access: yesКомпьютерная оптика, 2022
This article proposes a new type of subwavelength axicons for creating and focusing second-order vector cylindrical beams. It is also shown that using the proposed subwavelength axicons, it is possible to create focal spots with an energy backflow.
S.A. Degtyarev, D.A. Savelyev
doaj   +1 more source

Non-Markovian effect on quantum Otto engine: Role of system-reservoir interaction

open access: yesPhysical Review Research, 2021
We study a limit cycle of a quantum Otto engine whose every cycle consists of two finite-time quantum isochoric (heating or cooling) processes and two quantum adiabatic work-extracting processes. Considering a two-level system as a working substance that
Yuji Shirai   +4 more
doaj   +1 more source

Swelling‐Programmed Topographical Guidance for Dynamic Spheroid Self‐Assembly via a Mechanochemical Hydrogel Niche

open access: yesAdvanced Functional Materials, EarlyView.
A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam   +8 more
wiley   +1 more source

Overcoming Printing and Interfacial Challenges in Liquid Metal Direct Writing for Integrated Stretchable Electronics

open access: yesAdvanced Materials Technologies, EarlyView.
Liquid metal direct writing is advanced from a technological and fundamental point. Utilizing a kinematic bed, printing on large surfaces with irregularities is enabled. Furthermore, a pressure‐driven flow during printing is discovered that affects the thickness of traces.
Maximilian Krack   +15 more
wiley   +1 more source

Irreversible work and Maxwell demon in terms of quantum thermodynamic force

open access: yesScientific Reports, 2021
The second law of classical equilibrium thermodynamics, based on the positivity of entropy production, asserts that any process occurs only in a direction that some information may be lost (flow out of the system) due to the irreversibility inside the ...
B. Ahmadi, S. Salimi, A. S. Khorashad
doaj   +1 more source

Ion energy diagnostics in the plume of an SPT-100 from thrust axis to backflow region [PDF]

open access: yes34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998
Of primary concern with the integration of Hall thrusters on conventional satellite designs is the possible damaging effect of high-energy exhaust ions impinging upon spacecraft surfaces. This paper reports on measurements of plasma ion energy distributions within the plume of an SPT-100 Hall thruster using a custom-designed molecular beam mass ...
King, Lyon B., Gallimore, Alec D.
openaire   +1 more source

Transverse intensity at the tight focus of a second-order cylindrical vector beam

open access: yesКомпьютерная оптика, 2021
In this paper, an effect of a reverse energy flow at the focus of a second-order cylindrical vector beam which passed through amplitude zone plate was investigated with a scanning near-field optical microscope.
E.S. Kozlova   +4 more
doaj   +1 more source

Additive‐Manufactured, Multifunctional Bioreactor Technology for Dynamic Culture of 3D Bioprinted Tissue Models

open access: yesAdvanced Materials Technologies, EarlyView.
We introduce an additively manufactured bioreactor with a perfusion flow system and integrated temperature and pH sensors for skeletal muscle tissue biofabrication. The bioreactor's performance was evaluated by assessing the viability, spreading of the myoblast cells in a printed scaffold, and contraction of the isolated murine musculi interossei ...
Lys Sprenger   +9 more
wiley   +1 more source

NUPRO process vent/MCO check valve - prevent backflow from process vent into MCO [PDF]

open access: yes, 1999
NUPRO process vent/MCO check valve - prevent backflow from process vent into MCO CGI-SNF-D-30-3-P4 ...
Van Katwijk, Carl
core   +1 more source

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